I've been seeing a temperature mismatch of about 20 degrees between my temp gauge and an actual thermocouple reading through the dipstick tube. Seems like the 911 temp gauge/sender mismatch is pretty common from what I've been reading. I've been using the standard 914 sender.
My gauge is a combination of various elements and therefore the actual whole gauge number cannot be used as a reference. Am I to understand that the temperature module was built in November 1980 as per the picture below?
I found this chart either here or Pelican.
If my temp gauge was build in late 80, then I need to get a 911 606 112 sender.
Will this fit in the standard taco plate or is it too long?
I've been seing a lot of comments about late temp gauges being numberless which makes me wonder if I actually do have a 1980-81 gauge...
Yes November 1980 is correct.
But the numbered range shown on that gauge does not seem to be correct for the '81 gauge, or any of the non-numbered gauges. I recall that the only one that topped at 340 or so did not start as low as 80. Thought it started at 140. Since this one has numbers on it, it must have been refaced, and I wonder if the face is the correct scale for the gauge itself.
Another thought - the build date of that gauge was 11/80, but that does not mean that it wasn't a replacement for an earlier car.
This could be tough to figure out. You may end up having to buy a new matching pair, or at least a used gauge that is clearly identified.
Is that date stamp to indicate when it was made or model year ? the number on the very outside of the gauge face will confirm,I was sold a tach and it wasn't as advertised turned out to be a 86 from a 3.2.
The 3.2 tach uses a different signal than the earlier ones but my tachadapt will cover that.
I have the same combo gauge and it is matched with a 150 degrees celsuis sender,I matched a new 50mm VDO to it and got close reading between the two,there is a VDO sender that you can cut to length but think it is only 1/8''npt ,I just used a reducer bush,not sure if you could use it on a T4 motor.
Is it possible the one you showed in the pic will be too long .
I believe the date stamp is the build date. You need the part number to determine what it was originally supposed to fit.
As mentioned, I'm pretty sure the gauge housing and module are not matched. I believe the housing is from a 68 or 69.
I removed the module and there is only one face, no stick on layers. That being said, it doesn't prove anything.
There is actually a number on the actuation mechanism; 211216182. I did a Google search but couldn't find anything.
As for the 911 sender's length, I hope it can fit in the taco plate.
I guess I will have to validate all this with the boiling water method. It's a pain to do though, either you bring a battery in your kitchen or the camping burner near the car...
I'm trying to avoid buying a bunch of senders in hopes of finally matching them. The gauge /sender is documented but up to a point unfortunately. I wish that module number was correlating to a sender.
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